<template>
  <div class="side-menu-wrapper">
    <slot></slot>
    <Menu ref="menu" v-show="!collapsed" :active-name="activeName" :open-names="openedNames" :accordion="accordion" :theme="theme" width="auto" @on-select="handleSelect">
      <template v-for="item in menuList">
        <template v-if="item.children && item.children.length === 1">
          <side-menu-item v-if="showChildren(item)" :key="`menu-${item.name}`" :parent-item="item"></side-menu-item>
          <menu-item v-else :name="getNameOrHref(item, true)" :key="`menu-${item.children[0].name}`"><common-icon :type="item.children[0].icon || ''"/><span>{{ showTitle(item.children[0]) }}</span></menu-item>
        </template>
        <template v-else>
          <side-menu-item v-if="showChildren(item)" :key="`menu-${item.name}`" :parent-item="item"></side-menu-item>
          <menu-item v-else :name="getNameOrHref(item)" :key="`menu-${item.name}`"><common-icon :type="item.icon || ''"/><span>{{ showTitle(item) }}</span></menu-item>
        </template>
      </template>
    </Menu>
    <div class="menu-collapsed" v-show="collapsed" :list="menuList">
      <template v-for="item in menuList">
        <collapsed-menu v-if="item.children && item.children.length > 1" @on-click="handleSelect" hide-title :root-icon-size="rootIconSize" :icon-size="iconSize" :theme="theme" :parent-item="item" :key="`drop-menu-${item.name}`"></collapsed-menu>
        <Tooltip transfer v-else :content="(item.meta && item.meta.title) || (item.children && item.children[0] && item.children[0].meta.title)" placement="right" :key="`drop-menu-${item.name}`">
          <a @click="handleSelect(getNameOrHref(item, true))" class="drop-menu-a" :style="{textAlign: 'center'}"><common-icon :size="rootIconSize" :color="textColor" :type="item.icon || (item.children && item.children[0].icon)"/></a>
        </Tooltip>
      </template>
    </div>
  </div>
</template>
<script>
import SideMenuItem from './side-menu-item.vue'
import CollapsedMenu from './collapsed-menu.vue'
import { getUnion } from '@/libs/tools'
import mixin from './mixin'

export default {
	name: 'SideMenu',
	mixins: [mixin],
	components: {
		SideMenuItem,
		CollapsedMenu,
	},
	props: {
		menuList: {
			type: Array,
			default() {
				return []
			},
		},
		collapsed: {
			type: Boolean,
		},
		theme: {
			type: String,
			default: 'dark',
		},
		rootIconSize: {
			type: Number,
			default: 20,
		},
		iconSize: {
			type: Number,
			default: 16,
		},
		accordion: Boolean,
		activeName: {
			type: String,
			default: '',
		},
		openNames: {
			type: Array,
			default: () => [],
		},
	},
	data() {
		return {
			openedNames: [],
		}
	},
	methods: {
		handleSelect(name) {
			this.$emit('on-select', name)
		},
		getOpenedNamesByActiveName(name) {
			return this.$route.matched.map(item => item.name).filter(item => item !== name)
		},
		updateOpenName(name) {
			if (name === 'home') this.openedNames = []
			else this.openedNames = this.getOpenedNamesByActiveName(name)
		},
	},
	computed: {
		textColor() {
			return this.theme === 'dark' ? '#fff' : '#495060'
		},
	},
	watch: {
		activeName(name) {
			if (this.accordion) this.openedNames = this.getOpenedNamesByActiveName(name)
			else this.openedNames = getUnion(this.openedNames, this.getOpenedNamesByActiveName(name))
		},
		openNames(newNames) {
			this.openedNames = newNames
		},
		openedNames() {
			this.$nextTick(() => {
				this.$refs.menu.updateOpened()
			})
		},
	},
	mounted() {
		this.openedNames = getUnion(this.openedNames, this.getOpenedNamesByActiveName(name))
	},
}
</script>
<style lang="less">
@import './side-menu.less';
</style>
